if you have supers with drawn comb, just drop an empty frame in between the drawn frames. Preferably with some type of starter strip. it does not need to be BIG, just an edge for them to use as a starter/guide. With the empty frame between two drawn frames you normally get perfectly drawn comb. Once in a while, the bees decide to expand the honey comb on either side and make it wider. Catch it before it gets too far and shave it back where it belongs.
i use quite a lot of foundation/less and a lot depends on YOUR bees. I have given bees i knew to be good, completely new supers with foundation/less frames, and they drew every one of those frames perfectly, but that is NOT the norm. In such a situation, it is more likely that they will start in the middle and draw comb across those frames from one corner of the hive to the other.
My best advice, is to buy thin surplus foundation for medium frames (5 5/8) then cut it in half length wise. Use wedge style top bars and put the starter wax in place and nail the wedge in to hold it. This is usually enough to insure you get well drawn frames that are still completely edible.
I have tried cutting the 5 5/8 foundation into four strips to start with, and it worked better than no starter strip, but I had hives STILL try to cross comb it. With the strips hanging down 2 3/4 inches they seem to start and fill the frames much better and straighter.