I love snowshoeing. While every November I tell myself that I'm going to ski more in the upcoming winter, I always end up doing more snowshoeing than skiing. I think a big reason is because I simply love the motion of running more than the motion of skiing (skate or classic).
Some things to be aware of when you're first starting out. It is MUCH harder than road running and MUCH, MUCH slower. Depending on the snow conditions 9:30 pace on snowshoes can be roughly 6:30 road effort. So take all of your pre-conceived notions of pace relating to effort and throw them out the window
Your hip flexors will burn! The first 10 minutes or so can be tough and even though you're (hopefully) going very slow, you'll wonder if you can get through your 4 miles, or 6 miles or 1 hour... But keep slugging through, eventually that burn settles down and you lock in to a pace.
You'll probably clip the insides of your ankles a couple of times. You'll learn not to do that. Since you have some running ones they'll be a little more narrow so the adjustment will be relatively easy. Basically, you'll run a little more wide legged (or however you want to describe it) than normal.
I recommend getting some gaitors. Whether you're on groomed trails or unpacked trails you'll kick up a lot of snow and that can fill up the backs of your shoes. That can be very painful when it freezes and rubs your achilles raw!
Dress lightly. Even on an "easy" run, you'll be working really hard, it's easy to overheat. I always wear a pair of tights, a Craft base layer and a Mizuno Breath Thermo top. Add a light hat and some gloves and you should be fine.
Have fun! It's really a blast. Try going at night, too, with a headlamp, that's fun if you have some good trails in your area. Also, I don't know where in Minnesota you are, but USSSA Nationals are in Cable, Wisconsin this year. Look that up. Check out
http://www.cutemoose.net
for races.