Well, there is no difference really, I'd rather check to see if the timer is true through it's own operator rather than identifier. That's all, so I wouldn't bee too bothered if this wasn't added as we can already do that. But the wm one is a little more complex for 'newbies'. And would probably rather use one IF statement to check for wildcard matches.
if (*tes* istimerwm) { stuff to do }
-Andy