I'm not sure how exactly, it would be like yet. And Bitcoin integration won't be until next year, even if everything else went smoothly. Currently the INLEO team are working on $DASH integration:

• You'll be able to use a DASH wallet to sign into INLEO
• Your HIVE Account will have its Private Keys encrypted by your DASH wallet, so even the INLEO team won't know your passwords, but if you lose your DASH Wallet, you'll lose the account.
• INLEO interface will be DASH-themed if you used the wallet to login
• Prices will be shown in DASH instead of HIVE/LEO
• One you reach a certain thershold of HIVE and LEO earnings, (let's say $10,) they will be converted to your DASH Wallet automatically.

I assume Bitcoin integration will be similar.