I've not used a backpack purse before, and so far I like the conveince and comfort of it.  But what it lacks is side pockets for easy access to my phone and key fob.  The zippered picked in the front is great, but not for quick and easy access.  This functions like a back pack, and less like a purse.  So if I put my keys and phone in it, I have to hold it by the straps, set it down, the open the zipper to get my keys or phone out.  Overall I like it and it looks nicer than a back pack.  But side pockets would have made it perfect.