Have the T-rex sliders on both sides. Also, have the R & G tank & tail sliders.
All for protection (as controversial a subject as how to break in a bike), not for looks.
T-rex sliders seem more substantial, better anchored, and less likely to crack the engine (again no evidence). Sato's require a little modification when installing the right side/crank case slider IF you have the newer exhaust heat shield on--can be done--(don't know about the older heat shield AND no longer have the heat shield on anyways).
In the pics, you'll see the Left-sided/suspension slider attached to a hefty bracket that spreads out a good 8" & is anchored in 3 places (hard to see the bracket because I had them powder coat the center of it black (stock has aluminum-colored center)).
Upsides to T-rex?
1. Bigger surface area of sliders & the same or more anchor points for better dissipation of energy upon impact (potentially)
2. They told me laid a Panigale on its side at their shop, and both sliders kept the fairings from touching.
3. Way less expensive than Sato's (remember, for Sato kit WITH extra susp protection is $398)
4. Better availability than Sato's (stumbled on T-rex's while waiting for Sato to make more susp sliders)--on back order til October 2013 right now.
Downsides?
1. The shorter you are, the more the Left/susp slider rubs the medial (inside) surface of knee when you are standing still--feet on the ground. (hardly notice it now)
2. Depending on how you position your feet, race boots can bump up against the Left/susp slider when shifting (though I rarely notice it now, even at the track).
3. If you have a carbon case cover, T-rex moves in and the crank case says "Sayonara" to the carbon.
Don't get me wrong, Sato's stuff looks hot and I'm sure the quality is there, but I felt better protected with the T-rex. If you go with the most popular forum opinion, sliders are just plain dangerous for engines, frames and bikes in general. Guess the T-rex seems more spread out (hopefully less of a catapult once the bike slides off the pavement & onto the grass).
As for the R & G tank/tail sliders, I bought 'em, then avoided putting 'em on til I went to the track. I like the cleaner look without them but was willing to sacrifice that for potential protection (again controversial). And what do ya know? Gotten way more compliments about 'em than raised eyebrows. Guess they're not as melanoma-like as I thought they'd be.
My apologies for the lengthiness of my response, but I hope it helps.
Bottom line, if I had it to do over again, at this point I'd go with T-rex (and the R & G) again.