Pros: Easy to use, comfortable almost everywhere, fun (!)
Cons: Not quite as good as a specialist park/carving/powder ski
Airline baggage restrictions. As an instructor, they're one of my biggest fears; flying between northern and southern hemisphere seasons with skis/snowboard/boots/bindings means I really do need a 'one ski quiver' and I think I've found a good one. I bought the e83 based on reviews from this and other sites and I've been really rather impressed. Before I go on, about me:
Skill level: Intermediate/Advanced
Ski Length: 168cm
My first impression of the ski was mixed - they felt very heavy in my hand and I was worried they would be a mid-wide boat that I couldn't turn. On my feet, however, they were a different story - the early rise tip and tail mean that at low speeds, the ski feels about 15cm shorter. When pushed, the entire edge seems to engage smoothly and give pretty solid hold on groomers. 83mm doesn't feel very wide underfoot - I haven't noticed any difficulties going edge to edge but I did find it tricky to ski a scraped out racecourse so I suppose in really icy conditions they're a bit tricky to turn fast (Long turns on icy groomers still feel great though!)
Having skied these all season at a small hill, I recently got a chance to try them out in the mountains and was really pleasantly surprised - they dealt well with choppy snow; not easily deflected despite being light and were surprisingly floaty in ~10cm of powder. I was also amazed to find that I could ski bumps with them (Disclaimer - I'm a horrible bump skier, but was still able to put a few turns together and come out smiling)
Apart from 'technical' aspects, I feel it's important to mention the sense of fun I get on these skis - I guess it's a combination of lightness and moderate flex but I feel very comfortable on them and can go from short turns to long to switch to off piste without having to work too hard.
I would recommend these to someone who is going to spend most of their time (>70%) of their time on groomers but still wants the ability to go other places without feeling held back by their gear.