Raist,
I don't think many by the E-5 and/or the 14-35 on a whim. They are tools that do certain things extremely well. Very sharp photos at low ISO is obviously the main strength, and that in combination with enormous reach with moderately sized telephoto lenses. My two main alternatives (if I change from Nikon, which is tempting for me at the moment) are this combo or Sony A850 with Zeiss 24-70mm f/2.8. The Sony obviously has more resolution, but not nearly as much as the pixel count indicates, and that combo is somewhat cheaper.
However, if I add a 300mm eqv. prime, the whole equation is turned upside down. The Sony 300mm f/2.8 (and equivalent lenses from Canon and Nikon) is 2-3 times as expensive as the Zuiko 150mm f/2.0 (in Thailand it's three times as expensive), and now we're talking differences of $3-4,000. The same kind of differences can be seen for other telephoto lenses where the reach is similar.
For people like me, who use legacy lenses, Olympus is an ideal solution, and the combination 4/3 plus m4/3 seems to work rather well. Being a GH1 user already, I have a backup camera that will work well for most of what I do.
Although I agree that the future is all Pen, I also believe that future pro cameras from Olympus will include solutions that also cater for the current range of top pro glass. I don't think Olympus will invest in another round of that kind of lenses, and dumping what was probably a considerable investment wouldn't be smart. Not for Olympus and not for the customers. Actually, I wouldn't be surprised if we see a hybrid solution similar to what Sony has developed for their SLT cameras, but with m4/3 lens mount and possibly a tailor-made adapter for 4/3 lenses.
Time will show, but whatever happens, a couple of E-5s plus lenses bought today will bring lots of photographic joy for the owner for many years to come.