There is a distinct similarity in the basis styling of Grubs Boots and Muck Boots for a very simple reason - David Foster designed the early Muck Boot ranges from around 2000 / 2001 that defined the insulated neoprene / rubber wellington boot concept.
The levels of insulation changed along with the outer sole patterns. These changes being made to broaden the range and useability of the boots.
David later parted from Honeywell, the owner of the Muck Boot brand, and set up Grubs Boots.
The principle of insulated waterproof wellingtons was again the core behind the ranges. However, with grubs there has been greater emphasis on the choice of outer sole pattern. This was an intentional variation to ensure there were soles and insulation levels suitable for most situations Dog walking, Fieldwork, Stables, Riding and gardening - there was a sole suitable for everyone. To add quality to the brand, David introduced VIBRAM soles into many of the ranges - something that would be recognised by many Hikers as the sole of choice.
To demonstrate the differences, we must compare specific boots from each Brand.
From our experience, the most popular Muck Boot is the Muckmaster. A robust boot with a sturdy outer sole with deep angled cleats which is very popular with Farmers, Vets and Dog Walkers.
Grubs had two boots that matched the requirements for Farmers, Vets and Dog Walkers - The Grubs Stalking, with a VIBRAM MultiSport sole providing excellent grip in soft grass and mud. With slightly higher external protective rubber there is the Grubs Fieldline - this time with a VIBRAM Soripiss outer sole. Both of the VIBRAM soles are slightly less rigid than the Muckmaster, making them ideally suited for the large Dog Walking and Vet markets.
In the Muck Boot range, the Arctic Adventure has been the best selling womans wellington. This is available in a range of colours. However, the sole pattern is fine for walking on hard surfaces, but will not provide grip on wet grass or mud.
Grubs have the Skyline boot, with quilted upper and similar grip levels to the Muck Boot.
However, Grubs also have the Frostline range with a lugged TRAX sole pattern making this ideal for general use and dog Walking in particular. The Grubs Iceline being a stylish quilted boot with extra insulation for colder temperatures.
The Grubs Frostline range is perfect for use in the Equine world, with the sole pattern providing good grip on both concrete and grass. The Muck Tack boot is the obvious alternative, but the sole pattern is very shallow and provides little grip on soft surfaces.
Both Muck boot and Grubs Boot have a dedicated riding boot, with little to distinguish from each other. But going forward Grubs have the Ramilo - a fantastic riding boot utilising Kevlar.
For general boot use, Muck Boots have the Chore Hi Boot - a traditional styled boot with a pretty standard sole pattern that is good for hard surfaces but not for muddy ground. On the other hand, Grubs have the Tayline with a tread similar to a tractor tyre and the Fenline with broad perimeter lugs for hard surface grip and inner spikes for grip on softer ground.
Grubs then have non insulated boots in the Rainline and Highline ranges - both with easy to clean rubber outer layer.
When it comes to gardening shoes, Muck Boots had the Daily shoe, but this is being discontinued and replaced with the Muckster. Both are ribbed soled shoes with a hard rubber upper. To compete, Grubs have the Woodline - very similar to the Daily. But then Grubs also have the All Terrain shoe - similar sole to the Woodline, but with a soft nylon / cr foam upper - much more comfortable and usable all year round.
So although Muck Boots have a good range, Grubs have boots that match or better the range in every situation.