This subject is going to get a lot more heated when/if the annex 14 regs NPA18, come into force. JAR Ops 3 is looking to allow only true Class 1 (old Cat A) into out of hospital landing sites as of 2004/5/8 depending on who you talk to. Either the operator will have to buy a true Class 1 helo or the hospital will have to re-build its landing site to accept Class II ops.
Class I will become more and more the norm for more commercial ops as the european regs bite.