I saw those on their official site.. Not sure if I missed something (only a quick look at work) but I only spotted the thumb button automatic version.. is that the one you mean?
I have a HM - apparently highly thought of I have only used it for a bit but it seems to do the job well enough
No the push button one is for lard arsed harley and multistrada riders with crippling ailments to the function of their legs. The TLS-QS4GP-12 if for track applications. I use a HM one myself on the 853R, though I do know several gearbox's that have suffered using HM units. I have aleays been ok, though I would err away from a HM unit if I was purchasing another.
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Never heard of anyone say the HM kills gearboxes, Ducati, BMW, DJ, TL maybe but NOT HM! HM is the best shifter on the market IMO and used by most of the riders in Moto3 and I think now ALL the Moto2 teams... as well as the likes of Ten Kate etc etc etc
My 848 has a HM one courtesy of Arthur above, and would recommend it and would also recommend buying from Arthur.....
Try one......it'll make you giggle in your helmet. Honestly once you get your head around the idea of not shutting off....you'll love it!