It has the advantage of spreading our our name, our brand, however:
A bitcoin user is more prone to use a bitcoin wallet with that feature than using a bitshares wallet with the same feature. I dont know if it's the case, but from what I see around forums, there are a lot and i mean a lot, bitcoin user's that are bitcoin-centric, for them, bitcoin is the one and only and there can not be another one. They're like horses with blinkers. They can only see what's in front of them. I'm not saying most are like this, but i've seen quite a few. They fail to see multiple cryptos can coexist. ie: bitcoin for normal stuff like buying a coffee, ripple for banks and bitshares for stock trading, a decentralized nasdaq and also for crowdfunding.
Whatever they use a bitcoin wallet with that feature or a bitshares wallet with that feature, they will use bitAssets, that's what matters. They bring volume either way.
In the end I'd say a bitcoin wallet with the feature is better vs the bitshares one becasue of those reasons. A bitcoin user is much more likely to download a bitcoin wallet than a bitshares wallet, even if they do the same thing.