The Noct is the dream of many users and collectors out there (me included). Without wanting to sound too much like a Leica fanboy, this might be the best choice for you if you enjoy full-fat creamy bokeh. You can read Steve Huff's reviews and see his sample images, in the link I've included. He sums it up pretty well.
If you plan to use it as an EF mount lens though, you'll have to have a quick hand and a good eye, or just focus using live view if you desire perfection. Although youll probably have some experience with razor-thin DoF, being the owner of an 85L. Remember this is a full-manual rangefinder lens, so you're back down to the nitty-and-gritty job of manual focusing! No creature comforts here! It might prove to be a headache though with the couple inches or so of error margin you get when shooting wide open.
Another thought- if you do succumb to the attraction of this lens, consider shooting with Leica film or digital. The rangefinder mechanism should allow for much quicker focusing on the go, as well as access to many other fantastic lenses like the Summilux series in their native mount. Be aware - this is a black hole! I wouldn't expect cost to be much of an issue though. I'd be glad to help you get started. Just ask.