I was trying something similar to that last night, i created sort of a homemade bong and i got huge rips from it, this so far has proven to be most efiencent way of using changa for (for me a least), i would say i might of even had a breakthrough experience, which felt very similar to my first breakthrough on lsd, I still plan on experimenting with some other methods of smoking changa, but this method seemed to work quite well, this would also have been my second breakthrough experience and its something that did not happen even when i used the freebase alone (although im not sure i smoked the freebase right, well rather vaporize in that case) anyway i would definitely say it was good experience, im not sure if different blends contain different trips and visuals, but my blend seemed very similar to the lsd like visuals i get, and the breakthrough largely felt the same as well, with mind and body being separated and just overflow of knowledge and desire to learn pouring into me, just with a much shorter duration overall.
If anyone would like to share some similar or otherwise experiences i would love here them, cheers!