My Dwebble evolved into Crustle yesterday, and I tutor'ed it Shell Smash, and got the X-Scizzor TM.
Dwebble was one of my most reliable pokemon before evolution... now... wow, it's just steamrolling everything. Probobly going to sweep Skyla with it, provided Rock Slide dosen't miss. [Failing that, I can take her on with Cofigagus, Garbodor, or Samuwott]
Oh, and you *can* find the Miccino evolution in shakeing grass on Route 5, with about a 5% chance. It comes with Tail Slap already, but misses Wake-Up slap. [Which are the only 2 Level up attacks you'll really be using :/]
Herdia does not outclass Miccino. Technician Wake-Up Slap, and Technician STAB Tail Slap [Aka: BP 50 Multi-Hitter = BP 100 minimum, 250 maximum, AKA, Explosion levels of power!]