Great.. just got back from my Chase branch (a former WAMU)...that was an easy 50k CO Onepass miles for 30 minutes of time opening a personal and business account! I'll go back later and try to open up a third account for another 25k miles. ^ ^ ^

I am sure opening them is no problem, but whether you get multiple bonuses is to be determined.. I am reading their fine print:
"Account opening and award of premium are subject to approval. Limit one business checking account-related premium per customer per calendar year.
Attempts to earn multiple premiums may be voided by Chase, at its discretion."