David, I did not keep notes on how long to germination, sorry. Basically I just throw them in there, and check on them periodically. My vague sense is that at/by around 4 weeks you might see some root tips on some crosses, certainly by 6 weeks, but not all crosses emerge at the same time, and not all of the seeds in the same cross emerge at the same time. (There was one cross that I was particularly anxious about, and as I recall, it took about 2 weeks for most of the seeds to start growing roots, once the first one had emerged.)
It has also been my experience that dips emerge faster than tets, but then again, that could have been just the luck (seed dormancy traits) of the particular crosses that I did.
"...better part of one entire crisper"?
DH would kill me... I have to jam my ziploc bags into part of a door shelf.
I should point out here that you do have to make sure that those ziploc bags are zipped
tight. One year, I apparently didn't zip one tight enough, and the water I had in there (more than a bit) leaked out and pretty much obliterated the ink on parts of the labels of a few of the ziploc bags.
I had to try to reconstruct what the crosses were for those bags. Nowadays, I put a 4" plastic label into the ziploc bag, with the cross written on it with a garden marker. When I plant the cross out, the plastic label goes into the pot.