So I landed in BOM after the long flight from EWR and used the TVOA with absolutely zero problems. The agent didn't ask a single question, but it did take a minute or two to capture biometrics (fingerprints and photo).

Just a note, it's very easy to miss the correct counters for VOA in BOM as it's poorly signed. They are counters 1-8 which are just on your left when you first enter the immigration hall.

And one addendum...bring a print out for your airline. They need to see the "granted" status with your visa number. Agent said he's had to deny boarding to a couple people whose payments had not gone through and did not have "granted" status.