Yes, most bows and crossbows with imbue slots can have critical imbuement! Infact, almost all the crossbows and bows have 3 imbue slots!
This also includes this masterpiece:
Musician's Bow, Range: 4). It weighs 12.50 oz. Imbuement Slots: 3
Yes, even this bow can have tier 3 critical imbuement, so obviously The Devileye can aswell :)
If im correct I believe that it's only some of the umbral bows/crossbows that can't have T3 Crit
The Devileye is indeed really strong, but its bigger flaw is its hit chance, this is why paladins rather use a bow with a higher hit chance, than not. But once you hit with the devileye.. its bye bye monsters.