I found an assembled Glock 22 slide for cheap and I'm going to try it on my G35 w/ Sight block and see how it is. Definitely noticed some serious snap before I put a weighted magwell, SJC frame weight, and weighted base pads on it. Did some slide lightening cuts on the 35 and will likely do it on the 22 slide.
Regarding Glocks holding you back, it wouldn't be a terrible suprise to see Robert Vogel win Limited Nationals shooting a Glock.