Im not planning on using as a drip system per se. I am using it on a timer with open ended feeders to deliver a flow of water to each pot for a period of time rather than a constant drip which would not be ideal. I understand your point with larger grain sized soil normally used in pots (ie Adakama), a single point might be problematic. For my set up this should work out fine.
Ive seen the same kind of system used at a bonsai nursery and it seemed to work fine for them. I was reluctant to go with any kind of sprinkler or misting system because Ive been told that wetting down the foliage on a daily basis can be a problem for some trees. Also a spray system is more wasteful of water. Since we are on the county water system and we pay for water, Id like to conserve as much as possible.
What is a open ended feeder?