It is possible to do what Vcarve does and much more, if you know how to do it. I would venture to say that if you are asking this question, it would take quite a while though. Mastercam is a powerfull program, but it has taken me weeks to get to the point of comfortably moving around in it, and I still dont know how to do what can be done in Vcarve within minutes of opening up the program for the first time.
I dont know, if you can, I know I cant get it to. I hope to be able to someday, but I am struggling with it.
I can do the stuff in Gibbs, I know it better than MC, but it would take longer to make a sign in Gibbs for me, than to do one in Vcarve. Vcarve makes the sign for you with little effort.
A decent set of training CD's for MC cost more (or the same) than the entire Vcarve program does.
I geusse the reason why would be because you want to make signs quickly but you dont have the time to learn a powerfull CAD/CAM program.
In the long run the skills developed learning MC would be more valuable though. Learning Vcarve is not going to get you a job making a living in itself, but becoming proficient in CAD/CAM would.