Would strongly recommend just using the gel tips instead as they are fairly deep-insertion anyways, tri-flanges would be pushing it. Otherwise, yes they would fit.
A bit more smooth, just as warm, a tad bit more impact but the smoothness is reminiscent enough that it should matter little. Overall FR is similar, yes. Not an upgrade by any means, but a decent alternative.
So basically I should just stick with another pair of UM2s?