This is crazy to see this on Hacker News because I have a TX81Z sitting next to me on my rack. I've been using it for a few weeks now and love it for, obviously for Lately Bass, but also other tones I use in arps.
My family keeps our own compostable straws in the car. We typically don't ask for straws, lids, bags, etc. There are cases where you may forget, or can't avoid it, but overall it has decreased our yearly plastic use.