Nasty? I haven't heard that before. The best thing to do is set them on the bench outside of the plane first but many are matching them inside the plane too.

If you are conserned about powering the servos directly there are many ways to do it. A $7 y-harness will do the same thing. Another good solution is an Isolator like this one. http://www.i4cproducts.com/the_isolator.htm

If you want to use a matchbox there is nothing that would prevent you from using them with the Hitec servos. At $25 less per servo you would have the extra money to buy them if you want.