Can I use my electric facial hair shaver for other areas?!

An electric shaver will work, but I would suggest you trim it first before trying to go smooth with it or you'll be ripping out those long hairs. If you're using it only on your trail then it's pretty straight forward. If you are going further down, be careful. An electric razor is not designed for the creases of the male package. It WILL catch on your sac and although not serious, it will bleed like nothing you've seen.
I always use a regular razor around my penis and any further because of it. Take your time and be careful, you'll be fine.
Also, whichever one you decide to use, it's best either in the shower (if your razor can get wet) or as soon as you get out, the hair is softer and the folicles are open. you'll get the best results. One last point... don't use soap as a shave cream, it will dry you out, especially if you've not done it there before. You don't want you're manly area dried out.

Hope I helped give you some ideas...

Personal experience

totally fine.
just as long as "down there" is clean there should be absolutely no problems in using it.
if you live by this simple rule then you and the women you will be with will always be happy:
keep "down there" always as clean so you wouldnt mind putting it in your own mouth.
( of course u wont put it in your mouth, but if its clean enough to have no worries about putting it there then youre a happy camper)

just make sure to clean "down there" and the saver before, AND after.
this way nothing could ever happen.

go for it dude