I personally am not a fan of ICUS, so I try to keep my ICUS time to a minimum. However, that's not to say that it isn't a good way of getting the minimum time on type as has been said above.
The only other way I can suggest is to private hire the type you need time on and get 10 hours that way. Sure, it may cost you $3000 or so, but that ain't much in the scheme of things.
I had to get 20hrs on C210 for my first gig, and I ended up having to pay for it myself cause they wouldn't accept ICUS.
520.