Thanks guys. Will go ahead and get the rims then.

These are for our Bike Friday touring bikes. Some asked why/ Well, Presta 20" are not available in India at all, and I need to get them from abroad at higher prices, which become even more absurd when our 50% duty is added.

OUr old rims [I just measured at 24mm too] are drilled for Shrader and I've got a bunch of Shrader tubes lying around which I bought in bulk, so would not want to waste them too.