The cool thing about wetmounting on a Coolscan MF scanner is that it's really easy and you can work fast - between the fluid and ICE, almost all defects are taken care of. No need for dust paranoia like on a drum scanner - and believe me with a drumscanner you have to be really paranoid.
As a parenthesis, my dusting setup for my drum scanner consists of a 240-120V transformer, a small compressor (for airbrushing) with a humidity filter, an airtool hose, a Wilkerson coalescing filter, and a Simco TopGun ionizing airgun. The coalescing filter is a bit expensive (a few hundred dollars, cheaper on ebay) but really scrubs the air clean from oil as well as humidity. The TopGun emits both positive and negative ions into the air stream, which gets rid of any and all static, period. It's quite a setup but if you spend up to an hour dusting each 8x10" scan then it's worth it. Great for cleaning keyboards and camera sensors as well.