Yes, typically 2-unit buildings, with a clean eviction histories, that are delivered vacant sell just a bit less than two individual condos largely because they are on so many buyers' radars. And as stated below, you and a partner (with a 25% or greater interest) each need to live in your respective units for one full year to be eligible. Conversion after that can go quite quickly if you've got the right team and are diligent.
The building also needs to pass specific inspections to convert, so if you buy one with most of the required work already done will save you some money, time and headaches later on.
Since you would be buying with a partner the other consideration that is different is how you split up the building and expenses. For example, do you share the yard, roof rights, the garage, storage, etc? Just making those decisions can test a partnership.
How you finance the property now, and how you finance it once it is converted to condos also needs to be discussed. Overall, the partnership you would be entering, and your entry and exit strategies may be what is most different from condos or homes, and probably the most important too.