I have primed with Frajelico, and it turned out fine. The nutty taste came right through. I used 14 oz, but may have wanted a less carbonated beer.
I say go for it!
Tap 1 - DanDan the Elder DIPA (Sorta Pliny Clone)
Tap 2 - Rye Rhapsody Bohemian Pilsner
Tap 3 - Irish Red (Fermenting)
Tap 4 - Raisin Brown Ale
On Deck - Some other DIPA
In Bottles: Maple Barleywine, Peanut Butter Porter, Strawberry Ginger Cream Ale, Sweet Ruination IPA