Cheers Del,
Yeah there is some upstroke fumbling there masked by the sounds of the 2nd guitar and the cajon. What I've found works best for me... it's difficult to explain but I'll try.. thus far I've found the most success by holding the thumbpick differently than when I play a more usual thumbpick style, ie, hybrid.. I'm holding it almost like it was a normal pick, so I'm supporting the bottom of it too, I suppose I'm pretending that it isn't looped over my thumb. From there it's stiffer than a normal pick but I can get a almost normal pick style usage from it. it's hard and it's like a new technique for me, but with the hand in a hybrid pose, the upstrokes don't work and and some strums leave the pick a bit wonky, like it was slightly yanked off... by supporting it like a normal pick I can get the upstrokes without messing with the thumpicks position on the thumb but obviously the thumb is a little less free feeling as it's covered by the loop of plastic.
I'd normally play those tunes with a standard flat pick, but used the rehearsal as a practice session with the thumbpick, I'm quite happy with the results in terms of increasing the time with the thumbpick, but I do notice moments where it's not as free as a normal rendition with the flatpick... practice makes perfect though. I'll persist with it hoping the longer I use it the better the technique will get, it'll loosen up and be a bit more free sounding.
Thus far I've only played the rinky-dink style tunes with the thumbpick like the gary davis stuff I posted before etc... so this was a wee dip into something slightly different. hopefully I'll be able to blend the two styles soon, as moving from the strumming positions to the hybrid positions was tricky and those clips I didn't bother posting, haha.