The way I understand things so far is that Arise Bank's partnership with Bitshares will be to utilize the decentralized exchange. They are looking to become a completely decentralized bank, so that is where Bitshares was a perfect fit. Also, I believe that Arise Bank needed a substantial amount of BTS to join the platform, so this definitely increased demand for BTS at some point. As other projects continue to join Bitshares to utilize their Blockchain tech for their customers, they will need to buy BTS as well, and I believe there will be a lot of that in 2018, so BTS in my mind is a great investment. But that investment will not directly benefit from profits, just general usage of the blockchain.
I think Arise Bank's plan is to create a decentralized bank but that still offers similar options that you would find in a traditional, centralized bank,( i.e. checking acct., ATMs, invest in gold etc.) but where you are always in full control of your $. They also plan to allow cashouts of over 700 cryptos. Debit cards I would think would be a homerun. So investing in AriseBank, it is an opportunity to be a part of the first, dependable access to any crypto to any fiat. As well as giving us access to a greater number of financial instruments(because they will be FDIC insured).
Again, this is all what I THINK from reading and interactions, please do your own research!
Thanks that helps - I will have to keep reading about it!
Cheers