If there is any heat coming out of the unit, I would not for sure.
As I stated a few pages back, you want to force the baby to want roots. Some cuts stall under domes because the plant is not moving water through its' stem fast enough. Others die under a dome because rot sets in. I'm glad you are not using a dome this time, but being under a humidifier is not going to encourage transpiration either. Even in low humidity environments you can clone without domes if you can keep an eye on them and mist them only if they wilt. Normally if they are going to wilt, they will do it in the first 48 hours until they learn to drink from their stem.
I wish you would get a small bag of perlite and ditch the dirt for cuttings. I won't go as far as to say that perlite is sterile, but there is a much greater chance for your babies to get fungus or bacteria growing on them in dirt or potting mix.
Lastly there are big differences of opinions on trimming the leaves. I personally don't do it because I feel that the leaf loses moisture and has to heal. These babies don't need the added stress at this time. Instead of trimming leaves in half, I would have cut both of the lower ones(in your pic) off completely and that node would be under the dirt level too leaving only one set of leaves besides the growing shoot above the dirt level. I always make sure that there are two nodes under the dirt level and the lowest node gets scraped pretty good.
I hope you don't mind the input. Good luck Sir !
in a row, thank you both, 
Looking good my friend. Hope all is well!
