Do remember to allow the bees access to the entrance! (As if you wouldn't ... )
Yes, I still use it as a means of generating nucs with new mated queens, for increase or boosting the vigour of a colony in mid summer prior to the flit to the heather. A split board as described by Wedmore. When you get the hang of it you can introduce a frame of eggs and change the female line that way if you want. Described here:
http://www.sbai.org.uk/sbai_forum/sh...-queen-rearing
With some pictures:
http://www.sbai.org.uk/sbai_forum/en...ing-the-splits
Paynes nuc boxes are easier and I now have a good few of these.
Yes, workers and presumably virgins can get lost under the floor when they're not used to it. When putting a split into a Paynes box with the entrance at the base (old design) now I usually put a piece of wood under the entrance to stop them walking under. The new design has the entrance high up the side and I think that will lead to less confusion.