Thanks for the post, blake.
Think I need to edit my thread a bit more. I actually do pretty well in pve with switching, but when it comes to pvp, I am way off.
When I try moving sideways while gun shooting, I can only really move one direction (let's say left)(using my 4th finger to press the "a" key. I use my "a" key to move left, while I press z and space bar to shoot and switch. It doesn't work out well for me, though, since I can only move one way that way.
Any more posts will be greatly appreciated and welcomed wit free hugs (>^u^)>
But perhaps I can help with the movement issue.
What I've done, and it seems to work well for me, is map a key to 'Move Backwards'. For you, I'd guess a key like E or Q would be easiest to reach. Perhaps even Right Mouse could be an option, unless that's what you use to fire. I'm not sure, you didn't list it.
This allows me to retreat while firing off some shots, and helps with corners somewhat. Why? Because, the knight still follows the cursor-just backwards.
If you do go about this, get used to it with the ATH, a GTH, or t1 before using it in t2 or 3. You have to pay attention to both the monsters and the hazards, which could be a problem for some.
Hope this helps!