The bees will draw the comb where there is NOT brood out deeper, and the space left will be the same, so you dont gain very much. A little extra space over the brood comb itself, but in this climate I am told the extra space is detrimental during severe cold, making it harder for the bees to cluster, no experience with it myself as far as overwintering.
Small cell...
I have read a lot of pros and cons to both sides of the story. i have 5 hives on the Mann lake PF120 small cell plastic frames. i run mostly foundation less in my other hives. i have 12 hives on standard cell plastic foundation.. (and more being built) I did an either roll on each of the small cell, five of the natural cell and five of the standard cell frames picked at random.
My mite counts as of May 1st
PF120 average of all five hives is 8
natural comb = 7
Standard comb = 9
I have done the same test before with similar results.. just looked for the inspection sheets and I have apparently lost them. The results have always told me that there was not enough difference to struggle with the changes. Like screened bottom boards. Maybe one or two mites less over the course of a year. So i dont use them. using OAV means I am mostly free of worry and care by treating spring and fall, so to me there is just no longer a struggle. Of course, the waynes bees I have never treated, I need to check them soon to see how they are coping up here.
Made 30 queen cells last week, will make 30 more next week, and we will see how those genetics do mixed with the local drones!