Absolutely not. Way too much potential for things to go very, very wrong. Aside from the size issue which makes the idea a no-go for me personally, just the thought of doing that freaks me right out.
Me too seeing how my dogs react to eachother. They love eachother most of the time but my boys get into squabbles every now and again. They are few and far between but I will not lie and say they do not happen. Crating them together would be like sending them to the slaughter house. It may work for awhile but I'd be numbering their days. That is my situation though.
I would never crate my guys together. They get along fine but in a confined space like that, no way would I take that kind of chance. I can put them in an ex-pen together (supervised), but a crate is a whole different story.