There is next to no difference in the basic communication - they both use exactly the same cluster library definitions and most ZLL bulbs available on the market at the moment will support both HA and ZLL profiles. I’ve not yet come across any that this is not true for and as you can see from the binding documentation, there’s a reasonable list of devices that are working with the binding.
There may be some limitations with remote controls, but I would not assume that a ZB-Pro device that doesn’t work now will instantly work with a ZB3 coordinator as it will still be a ZB-Pro device.