Well since we are on the subject. In all honesty how is a dry suit going to help in a complete wing failure with some heavy steel doubles, deco tanks and what ever else.
Both my trilam and my crushed neoprene suits can make me positive with 2 108s, 2 al80s and an al40. But I won't dive wet with just my 108s and no other tanks because my wing barely keeps my neutral until about 1/2 way into the dive.
My wife dives 2 steels and double stages wet, but she also carries a lift bag for redundancy...in caves...