Boston Bees
Bumblebee
Sorry I couldn’t wait any longer for replies so I’ve gone ahead and ordered two. My bees are building up so slowly that it’ll still be no bother to move frames over in a few weeks time.
Sorry, I think very few people have these hives yet which is probably why you didn't get answers.
I don't have one, but my answers would be:
1 Will my Smith short top bars still fit on the Abelo frame runners I’m assuming they will.
Yes, it takes national frames so, by definition, Smith frames will fit
2 Will the poly crown board house porter bee escapes and if not how do you use it as a clearing board.
No, it won't. So you don't. You would need to find some other solution for a clearer board (I would say just use a national wooden clearer board, but because this is a larger format hive I am not sure this will work. This is the disadvantage of buying a bespoke non-national format hive). If you had gone for one of the older format Abelos this wouldn't be an issue, though pros and cons of course.
3 Will the plastic tray under the floor cut down on the draught through the mesh floor (it would be handy in the winter time).
Yes
4 It looks like to me that the frames run the warm way. Having never worked hives the warm way are there any issues with that?
I would assume that the boxes can be rotated to be warm way or cold way, so don't worry about that. As for warm vs cold, google it - there's lots of discussions on that questions. Overall though, it really doesn't matter.
Let us know how you find them.