The Submatix is CE certified up to 100 m.
http://www.submatix.net/rebreathers/rebreathers.htmL#ccr
However, as delivered from the manufacturer the IP of the 1st O2 stage is 10 bars, so if you want go beyond -80 m, the IP needs to be modified.
As for the scrubber, the only issue I am aware of, is that because its rather small capacity (1,8 Kg if I am not wrong, vs typical 2,2-2.4 of others CCR), deep dives are somehow limited in time.