Here's a serious answer, which probably won't help.

Spamming scrolls to perfection is achievable. I've done it myself in the past with a gnome thief.

Whether or not you consider it viable though completely depends on your boredom threshold. Whether or not it is worthwhile depends on the opportunity cost (i.e. what you are giving up by spending the time and money spamming scrolls) relative to what you gain (reliable scroll use for most class, and possible avoiding level gains being used on the scrolls skill).

That said, I don't think this question is a newbie channel one, to be frank. I keep the channel on to help newbs that need help, not to hear this kind of question. Sure, I don't answer it, but it is still a distraction as are the responses that then ensue. I came across as a jerk because I'm annoyed at this question being asked there. However, I didn't express my annoyance at the time because I didn't want to make it worse for others who felt as I do. It came out here, on the forum instead.