No advantage, only disadvantage.
Lower p.atk and faster atk speed. But, any archer with bow can reach 1500 atk speed cap permanently easily.
The 15% extra P.atk Yul Tricksters have doesn't even make it worth it because of how bows enchant compared to how crossbows enchant.
If you curious enought to read an weapon enchant scroll description, you'll see bows enchant more per + than crossbows. ( P. Atk. +6 for one-handed swords/ blunts/ staffs, daggers, spears P. Atk. +7 for two-handed swords/ blunts/ staffs, dual daggers, dual swords, fists P. Atk. +12 for bows M. Atk. +5 for all weapons Starting from +4, P./ M. Atk. bonus is greatly increased (more so in case of blessed weapons).
It does not states crossbows specifically but it gets increased by 7 as two-handed swords/ blunts/ staffs.(take a look at the screen shot of a +3 crossbow that increases 21 p.atk from base p.atk)
SO, when you have it overenchant for like +12 which is basic for today, the difference in p.atk of the bow will be so much greater that even for Yul Tricksters the cross bow will give them less p.atk.
From +4 the enchant bonus more than double, so bows get over 24 p.atk and while crossbows get only over 14. Imagine that over many ++++
Take a look at this screen. +7 bow gets 144 p.atk increase while crossbow gets only 84. Dont get wrong assumptions because one is R and other R95. What dictates how much extra atk they get is the scroll, not the grade.
And you get even more p.atk and difference from Bow to Crossbow for blessed/dark/bloody/any r110(cause even regular r110 enchant like a blessed weapon)