The Forms in this case are independent. If you had similar fields and settings for both, you might get someone to see completely new fields each time, but no guarantees. So if both forms had totally different fields, the lead would be asked compltely different questions each time. If you are ok with that, then go for it.
Best to use the same form with progressive = ON and test that first on your own.
Remember that you may irritate your lead with too many questions if the forms end up being close together.