I mean, don't get me wrong. I don't mean to come off as "shut up, stop asking questions!" or anything; just that it wouldn't be a terribly good idea to get your hopes up based on what some of us here on the forums are telling you, and then present it as what's "right" to your GM. Shadowrun, like any RPG is so terribly table-driven -- varying wildly from one GM's interpretation to another's, in a very postmodernist sort of way -- that your best bet is to regard forums as vague sort of fact-and-opinion gathering archives, to use us to research and to drum up three or four different ways you'd like to build your gunswordcane, and then to present each version to a GM, see which one he thinks looks the most fair/balanced/whatever, etc, etc.
Don't obsess over the details we give you, because all our opinions about the "best" way to build this thing are just that, opinions.