Dragoon vs Lancer, is there a secret benefit?

[Lbdizzle]

I have been researching and looking around at different gear sets and what not. Now what I noticed is that beside the Gal Blog, and the different armors from the myth stone purchase. All of the gear, including all the allagan, can double for the lancer.
My question is, how effective would it be to be just a lancer at lvl 50 will full allagan. Another possibility could be a mix of allagan, phil stone armor, and myth stone accesories, cause the rings and stuff like that work for all classes.
The point of this would be to not use jumps, and use those extra five skills for things the DRG cant get like:
Straight shot = an attack that increase crit by 10% for 20s
Raging strikes = increase dmg by 20% for 20s
Venomous bite = Another DOT
Virus (who knew) = reduce targets STR, DEX by 15% for 10s
Eye for an Eye = magic barrier for 30s that has 20% chance to reduce enemies dmg by 10% for 20s
*these skills and the others you can get do not get trait enhancements, so the cool-down it pretty long for most of them*