Cialis with Humco (or whatever other suspension vehicle) is the way to go, however because Cialis is not soluble it's a bit of a pain in the ass.
The trick is to make a paste out of it first. Put in your Cialis raw powder, and then maybe only a teaspoon (or less) of Humco - then mix it into a paste. Then put in whatever flavoring you want, and keep mixing the paste.
Once you have your paste made, then add the rest of the Humco to bring it to the desired volume.
If you're just throwing in all your Humco at the beginning and trying to mix it, you're gonna have a bad time with chunks of Cialis swirling around. When you take it, some days you get 0mg Cialis, some days you get 30mg.