The advantage of a telework arrangement is that it's a way around the trend of concentrating Reserve units in the Fleet concentration areas. It's not totally a substitute for physical presence, but for a lot of the routine admin work - i.e., what RMPs are supposed to be for - it makes no sense to have a SELRES drive several hours to the NOSC or the unit building just to answer emails and chop forms. You can do that just as easily from home, and it also prevents the "Chief so-and-so has the chop on that and he won't be in until next Thursday" phenomenon. I've seen stuff get hung up because a reservist who needs to review/chop/answer it isn't local and can't come in routinely.
Unfortunately that same system that allows for drilling in non-concentration areas also ends up causing significant manning issues for operational units. Like I said, I can see the benefits of teleworking (like you said, it prevents hold ups), but it seems like a fix to an already broken manning system that's trying maintain a strategic set of business rules in a post-9/11, operational world.