Hi Jamie!
I haven't managed tax credit, other than voucher programs, but I think it's more common to start conventional and move to tax credit.
It's always good to have multiple skill sets, but be careful what you set yourself up for, because if you don't like conventional it may be very difficult to transition back to tax credit. I've found that without tax credit experience, I can't get a position managing a tax credit property. My interest in tax credit has also held me back in my career managing conventional properties, because management companies sometimes aren't convinced that I'd be well suited or committed long-term for an A class conventional community.
With my interest in non-profit and social service, of course, tax credit appeals to me. I also used to have a desire to work at the corporate level, but I've discovered that this would not be a good fit for my best skills. I know now that leaving my community is not the only way to advance in the field.
When you have many different levels of responsibilities, being "just a site manager" can still be great career.