I can't tell you the dynamics of non-multitouch trackpads, but I would assume that since scrolling is the same, perhaps other two-finger gestures are the same.
From what I hear, if you hover your mouse over an App's icon in the Dock and swipe up, it will reveal all windows for that app.
I would recommend setting up Hot Corners with keys as well. For instance, if I hold the Command key and move my mouse to the top-right corner, it will activate Launchpad. This can be done quickly, with one hand, and the addition of the Command key eliminates inadvertent activation.
When setting up Hot Corners, just click the pull-down menu, then hold a modifier key.
You can create 2-key shortcuts as well. I use mine because Option+Arrow or Command+Arrow is often taken by other apps, which breaks their usefulness. As well, I can reach all three keys with one hand without really reaching.