Got my new mat from them too, 2-layer rubber in blue, except I dealt with them directly; had 'em make up a custom size, 36" x 94" (Eh!)
Good to know.

Didn't ask, as I didn't need a custom size, but they were very responsive to my questions (i.e. shipping, as it wasn't listed at the time, or COO). FWIW, mat COO = Canada.
How good of a mat would it be for "assembly" work? Where you are using sharp tools? Does it avoid scuff and nick marks?
It would be excellent for such use.
Very resistant to sharp objects (probes). You can cut it with an x-acto or razor (new blade & get the point through first), so it's quite a bit tougher than say paper or cardboard for comparison's sake. Good at resisting nicks/scuffs as well (damage); it can/does get dirty, but can be cleaned. Also good with heat resistance (rated to 600F, but seems to be able to take more; haven't really done any formal testing, but at 700F, I don't see any damage FWIW).