I might be trading in my hybrid for an entry level mountain bike as I'm not sure how much I'll be into it, so I don't want to blow a ton of money. Anyways, I'd like to get some pedals that I can use with tennis shoes so I can hop on and just go for a fun ride with my wife. I've been looking at the Shimano M545 as it has clips on one side and platform on the other http://bike.shimano.com/publish/cont..._mountain.html
I also saw the Crank Brothers Mallet, which seems like the same thing, but I can't tell from the picture. Can anyone tell me if it's possible to just use tennis shoes with Mallets?
Thanks.

Jeff