i never grow tomatoes in the greenhouse i have one leanto greenhouse for cucumbers an 8x6 for peppers,aubergines and a 6x6 for chillis dont have no probs with outdoor toms and i find they taste better than greenhouse grown not sure why thou
I grow very few tomatoes in my polytunnel - some early ones in the soil and some late ones brought in pots. I always remove them (and beans) June-September inclusive if I've had success raising aubergine plants (tricky buggers).
I prefer the taste of tomatoes grown outdoors (Gardeners Delight, Sungold, Piccolo), but the main reason is that aubergines & beans are always magnets for spider mite, so I need to spray water on them regularly - which just encourages blight on any tomatoes in there.
I've considered having a smaller, damper tunnel for aubergines within the larger one, but aubergines simply aren't worth that much trouble - you only get a crop when they are dirt cheap in the shops, and even more importantly they taste exactly the same as shop ones. I only do it for the challenge.
Cheers.
PS. Turkish orange aubergines seem to have no real trouble with spider mite - probably because their leaves are as smooth and hairless as a pepper's.