This is in todays Huffington Post:

Despite the crack-down on medical marijuana, many in the industry are pleased that the legislation seems to be winning the support of most interested parties. Matt Brown, president of Coloradans for Medical Marijuana Regulation, an group that represents dispensary owners and patients, supports the bill as it stands now despite opposition to several amendments.

Brown specifically objects to the amendment allowing municipalities to ban large dispensaries, and says that the bill does not allow enough time for dispensaries to comply with the 70% home-grown rule.
I found it intersting that the term large dispensaries is made. There is also a download for the exisiting bill.

Here is the link:

Colorado Medical Marijuana Bill Poised To Clear Final Legislative Hurdles