Yes and no. I just went out and test fit a pair of bars...
It is an incredibly tight fight so it won't work unless you spend a little time sanding out the inside of the T tube. Also, the layer of paint on the cross bar adds quite a bit of thickness as well so you might have to strip the paint off as well.
I could also sell a "paint-less" version to save you and I the trouble with the paint but you would still have to spend a little time sanding to get it to fit right.
It is possible but it's not just going to slide right in with ease if that's what you are looking for BUT it will fit a lot better and tighter if you take the time to do it right.