They are only the same in the respects that they both will heat the cart, clearo or whatever you are using. There are however many reasons to have a mechanical. The most important to me is being able to fix it.
Read through the forums, how many people drop the pv's or put them through the washer, or let them go swimming in coffee, just to name a few of the thread I have read. You do that with most of these vv or vw out and you are buying a new
mod, yes you should have a backup, but what about when it is charging or if it breaks.
A lot of us don't have
vape shops near by, which means waiting on orders to come in, and we just all know the usps is always so helpful and on time and never loses a package.
With a mechanical wash it in hot water let it dry and you are good to go.