Bees are great at making comb and the fact is that the presence of nectar stimulates them to produce comb. Place either one or both into hives and they will start making comb and filling, often simultaneously. I've seen them fill an empty frame with no foundation, with comb in about 2 days time. They actually like the freedom to make their own comb, and will often make the cells larger. It can be easily cut out, once full of honey, and many people like comb honey. So go for it and don't worry. They know what they are doing better than we do. If the queen lays in the foundationless comb, it will become drones. I often place a few of these in the hives anyway to get the drones. The mites love the drones, and you can cut out and remove the capped drone comb and freeze, then discard, to significantly reduce your mite populations, as a management practice.