IM Copenhagen was split transition - was faultless. You dropped your run bag off at T1 the day before then they ferried it up to T2 for you. On the day when you landed in T2 a volunteer took your bike and shouted your number to another volunteer who ran and got your run bag. After the race, you got both bags from T2, no need to go back to T1 at all.
I've done it the last 2 years, it's very flat so ideal prep for Outlaw. Nice atmosphere, roads aren't too busy and it's a pretty run.Being late spring you just don't know with water temp, but that's the same everywhere.