My crew handles in the mainsheet as soon as we have one on the wire. But we still hand the sheet over when tacking. I think this to be the better method no matter how the sheet is run. During the tack the crew often does some smaller trimming/tuning or tries to get to the trapeze quickly. Either way he or she is not helped in those activities by having to also handle the mainsheet. On my boat I find I need to improve my tacking by careful sheeting. This will require to much close coordination if the crew was doing that for the skipper. So personally, I fully expect to keep handing over the sheet before and after tacks not matter what sheet setup.

Wouter