Well, honey frames are honey frames and they DO/WILL get messy with foundationless. What happens a lot is that two foundationless frames being drawn side by side will not usually draw out in a symetrical fashion from MY
experience. If one foundationless frame starts to grow quicker than another, especially for honey storage, then wonky comb results and the frames turn into a jigsaw puzzle. Not a big deal to ME
since I will be cutting a good portion of it apart during the honey harvest (cut comb). This is where BEEKEEPING comes into play. Start flanking your foundationless frames with two (2) already drawn (to your specifications) frames. I simply use plastic foundation frames there if I don't already have the nice, drawn foundationless frames available (yes, I do combo hives since I'm building resources out and not restricting myself unnecissarily ). Better yet, I flank a foundationless frame with two drawn, plastic foundation frames (TBH keeping has its limitations). And, for the love of Pete..........KEEP 'EM TIGHT. I actually run 11 frames in a 10 frame brood boxes and once I get two nice combs in the middle of a box, I just keep spreading and feeding into the middle.
It ain't rocket science....but is IS