It looks to me like they are wearing the Sutherland tartan.

I like the officer in #2 better. The dark hose, pulled up, look sharp and more in keeping with the uniform.

The officer in #1, with the hose pushed down, looks too casual for being on-duty. To me, the hose-pushed-down look is a casual, wear to the pub, go for a walkabout, kind of look. Rather like the equivalent of wearing your shirt untucked. Loose, casual and comfy. For an officer on duty, I would have worn them pulled up.

And one last thing -- if you wear your hose pushed down, please no garter flashes!