A friend of mine has a Parker with SS frets. They do sound fairly bright to me compared to nickel, and he says when he's playing out a lot on the occasions that he's used his Parker as his main ax, he was changing strings much more often.
Typically, on his Fenders (he's a Fender nut) he'd stretch them to three or four nights before he needed to change, the Parkers he was changing either every day, or every other day depending on how long the gigs were running.
The softer metal of the strings on the hard metal of SS creates flat spots faster, making the strings sound dead quicker, while the nickel frets have a little 'give' to them and don't seem to tear up the strings nearly as fast.
Personally: I'll stick with standard frets. I like the sound better and even playing the same guitar every day your frets will withstand several dressings before they need replacing.
The money you'll most likely save on strings is going to be far and above the money you'll save on refrets over the life of the guitar.
I have a 20+ year old RG550 that, while I'm considering a refret, I'm leaning towards a dressing, and this guitar has been played to death, even with the worn frets, it still plays, and sounds, just fine.