I think the thing that comes out of Leeds for me is that when you commit to a split transition, you are far more dependent on the organisation of the event than you are with a single one, as they will need to help to move you and your stuff around. This is particularly the case if you are going up solo and don't have a support crew available to pick up the pieces.
So you have to be very sure that you'd trust them to be there for that, and deliver on their promises. Since IM were also responsible for Leeds, I'm not sure that at the moment I have that level of confidence in them. I can't see myself looking at 70.3 Staffs.
If OSB (who do Outlaw) ever put up a split transition event, I'd be happy to go for it. I'm not against the concept, as it can deliver a nice race route - as it did in Leeds. But you do need to have that confidence in the organisers, or you'll end up stuck somewhere with no phone, no money, and just wet lycra between you and the world!
I'd still maintain that spending a couple of extra minutes in transition to get yourself comfortable for the next 6-7 hours is worth it. Knowing the rain was coming, I took the time last year to put my bike shoe covers on - and that meant I actually still had a pair of functioning feet by the time of the run!