its a good choice ,but Nano is not very popular,despite being a top 50 crypto (according to the coinmarketcap)
https://coinmarketcap.com/currencies/nano/the bad thing is that there are not many trusted gambling sites that are using it,pvp.me springs to mind only
luckygames has it to,I think,but there is too much controversy surrounding them lately
Well, that happens always with the best things, NANO has no fees, and no miners, so it is normal is not very popular, nobody can scam naive people with big fees or just keeping some % of coins for the Dev team as other coins do.
Nobody profit directly from NANO and that is a very important thing and why everybody should be using it.
And that is reason behind not being very popular in the crypto world because nobody win anything with NANO.
100% transparent, the best technology light years of the other "coins". That is the important thing.