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First off, this ascender works extremely efficiently. It keeps you hand in line with the rope so there wont be any torquing of the hand. The manufacturer estimates a 30% efficiency gain, but I don't know how you can judge that. It is more comfortable than your standard hand ascender as it is quite ergonomic. 
 

The issues are that the ascender isnt necessary designed for rock climbing since there is no finger protection. Slilding the ascender up against rock can mash your knuckles, and if not that, the bottom portion bulbs out which can get caught on edges. This lack of finger protection also means there is no loop for your fingers when detaching this from the rope leading to a higher chance of dropping it if not tethered. The detaching motion also takes a little getting used to. 
 

Lighter than most ascenders yet has the most features to accommodate all your needs - ergonomic handle, large carabiner hole for multiple connections, and an index trigger.  I can't say enough about the index trigger as this is probably the best and most ergonomic design on a full hand ascender.  A small bump on the trigger makes it easy to use your index finger to feather and release vs the BD index which requires the index finger to move into the trigger or the Petzl Ascension which requires a thumb.  This makes it the most comfortable as the lower ascender for jugging.

Of the compact progress capture devices, this might be the tops for hauling at 91% efficiency.  However, it's only rated for 2.5kN working load on each strand with a 4kN breaking strength, so be careful about your haul weight and consider a large pulley for big loads.  Given the compactness, it doubles as an ascender for TR solo, just be wary of the teeth as it is meant as a bodyweight ascender and not certified for fall protection.