I still have a combo Deville+kirk2 on my bike.
BOS had some serious problems when they started to come stock on YT bikes ; my opinion, is that such a big market was too much for a small company.
Customer service was a crap ; Since then, they recentered on european boutique market and everybody seems very happy.
BOS Stoy is still seen as reference coil rear shock.
Every time I ride my Deville RaRe, i'm impressed by how it goes thru rock gardens. The faster you go, the better it works !
If I were living in Europe, I would definitely try a deville 35mm.