Wha!?   (hic)   Actually, I've tried making jams with booze and frankly, I don't care for them.  If
the alcohol is at all present, I find the flavor overwhelming and if you use any of the fruit flavors, you'd be far better off using the actual fruit for both flavor and gel-set effect.  Why use Cointreau when you get a better flavor with orange zest?  Same-same with kirsch.  But that's just me.  I prefer my preserves and my liquor separate . . . but in enormous proportion.