These are working great with the P-Zero tires. I wanted tubeless but nothing was available at the time. I bought these tubes to go with the tires to cut the weight down. I will however go back to tubeless when these wear out.
Stem is fixed, so these are unusable with deep rims.
With cost of latex tubes & a major manufacturing flaw no one wants to challenge due to stem seating in tube , hoping so far that this technology will answer the ???.