I have the Reverb Stealth 150mm (420mm) and have about 80mm still out of the large frame.
Stealth routing was fairly easy to fit, no bleeding involved with the Thingamajig, and the hose was easy to trim. Shock and crank had to be removed to route the cable but this was easy. A fair bit of water came out when I removed the crank(!) so took the opportunity to drill a 5mm hole at the bottom of the BB casing for a drain hole.
Only thing to mention is check the pressure as it needs to be 250psi and wasn’t out of the box, also don’t overtighten your seatpost clamp.
Other than all that it is absolutely the best thing I’ve ever bought.