I am a fan of e-cigs, myself, and have written a couple of detailed reviews of my experiences with them for my pipe blog. They're a very different experience, and depend a lot on your choice of brands, flavors, etc. I cannot recommend any of the epipes on the market now, except for a company called epipemods. Most of the popular epipes have the atomizer built into the bowl and thus you must discard the bowl each month as you go through atomizers, a disposable part! To the cig smokers used to spending $300/month on cartons, this may seem a small price, but to a pipe guy, the idea of having to buy a replacement $45 bowl/atomizer combo every month is downright horrifying.
Thus far, my best experience has been with a Janty e-cig, and I have a friend who loves his Volcano. The flavored aromatic blends are good, and usually the best flavors available. This is weird to a pipe guy, accustomed to avoiding heavily sauced aromatics, but with e-cigs I've found that I enjoy much more the blends like "Chocolate caramel doughnut" than most of the tobacco-flavored blends I've tried, which are often really mild and dull. One exception has been London mix, by Want2Vape, which is a nice substitute for a pipe tobacco.
There is a lot of resistance in the pipe community to e-cigs, mostly of the "That newfangled techno stuff give me a REAL pipe", etc, but really, it's just another type of smoking and there to be enjoyed on its own different merits. If I'm sitting down to read, I want my pipe. If I'm walking and want to sit by the lake for 5 minutes, I take an e-cig that I can stick in my shirt pocket without getting tobacco everywhere. I like them for their convenience.
If you are curious, here are the links to the two articles I wrote on the subject:
http://talbertpipes.blogspot.com/2010/10/that-e-smoke-thing.html
http://talbertpipes.blogspot.com/2011/09/e-smokes-revisited.html