Soooo....
Does it actually look like a suit?
I've had a fair bit of trouble visualising it - especially taking into account the description in the canon companion (http://forums.shadowruntabletop.com/index.php?topic=20973.msg376450#msg376450)...
(Yes, I get that Vashon have refreshed the line - just can't quite picture it)
I've seen this point debated. Some people say that it does, because it's under the High Fashion category. Others say that not all High Fashion is suits, so no. I personally run with it as an entire ensemble. Basically, by this point in the Shadowrun Timeline, Shadowrunners have been used in media/movies as the go-to action heroes, protagonists, and I'm sure antagonists. For a regular, every day person, dressing like a Shadowrunner is copying the look that've become iconic in the movies, and that's precisely what the Sleeping Tiger is. It's that Iconic Shadowrunner look, all spruced up so you can look like a million nuyen no matter the occasion and still keep that super cool air of mystery that the Shadowrunner look brings.
This basically makes it an outfit that's as comfortable in a high class night club as it is out on the streets. You could even make an argument for it being right at home in a fancy restaurant or similar situations. It's expensive, it's custom, and it's designed to look like the coolest action heroes on the Trideo screen.
Also, I'm super glad someone pointed it out already: RPC also works as Electrochromatic, making it so you can change the color/pattern of the outfit on a whim. While the stealth capabilities are nice (and a -2 to all Perception tests to see you isn't something to be dismissed when the average joe has 3-4 dice to spot you), the ability to change its color scheme/pattern to whatever's trending is the ultimate show stopper for this slick number.