Don't know; dragging works fine for me, but I don't use any chording shortcuts...

One issue I have sometimes, that I've not been able to diagnose, is that sometimes the primary button works by itself, in which case evrouter dumps a second click, and left-click becomes left-double-click. Intermittent, and not enough hassle to figure out what circumstances trigger it.

Since yours seems to be sending different key codes (110-1, instead of 272-4), I don't think evrouter is doing anything helpful. You're just getting the (intermittent) automatic click support.

Also, the currently "supported" way to get mouse support is with jolouis's package. But the script is pretty much the same...