I have been looking at these, they seem to be rare as rocking horse doings, all the sites seem to have them on "pre order".. but I do like the bottle in butt design... never been a fan of trailing tubes.. so maybe if this takes off for me, I might go this way too, as to issues.. I think they are too new to have any discovered..
I had one for less than a week before I sold it on.
Was leaking out of the burst disks, so I had to tighten them. Then when testing it, it shot the follower from the magazine down the barrel and lodged it in there. I had to break the string and the spring was bent to get it out.
I bought 4 spare magazines so 6 in total. Out of them, 3 had the old style followers and 3 had the new ones. Tiberious DID send me the new followers (but forgot to add the spring and string that broke) - so they have gone on to the new owner.
I bought a TGROne instead and also a Milsig M17 CQC.