On a tight budget, is possible to use kflop + step&dir servos and run kflop in "velocity mode"?

I would like to use AC servo with step&dir drives, sending the enconder signals both to the drive and kflop.
Kflop servo function capabilities are very interesting to me and I like to use them.
I think the driver PID would be tuned in some loose P only configuration, allowing kflop close the loop.

I'm thinking in CNCDRIVE AC servo drive BLSV-05020 CNCdrive - motion controls. (I don't have the servos yet. suggestions accepted).

The reason to try to avoid SnapAmp and Kanalog is, as mentioned before, the budget.

But, if this configuration is not possible, is possible to use the driver own PID still sending the encoder signals to kflop to close a position loop at least?

Kflop seems so promising and I would not like to use it only as a trajectory planner or BOB.

Thanks,
Diego