Generally, you'll be good to go.
FYI...
1.) As with gimmicks of this nature, they tend to "talk" when being used alone or with other coins. You'll need to address this.
2.)These coins won't hold up to close scrutiny, but, for most, easy to overcome.
3.)Check out the forums for other info that you should know. I'm tired of typing ;-)
http://www.themagiccafe.com/forums/viewtopic.php?topic=507938&forum=202&start=0
Best wishes...