Not really. The JVC DVHS decks are capable of recording ATSC DTV from their IEEE1394 interface only. The OTA tuner is only for NTSC or cable.
You could use the JVC to playback into the Sony via IEEE1394, see below.
According to reliable reports here, the Sony will not act as a DTV source for the JVC, or any other DVHS deck. In spite of the fact all IEEE1394 communication is two way by it's nature, the Sony does not allow the DTV signal to leave it for any reason. This is very unusual, in that the other DTV tuner product on the market with IEEE1394, the new Mitsubishi HDTV's, do provide an IEEE1394 DTV output for recording of OTA signals.
The D-Theater version of JVC's DVHS decks are a source for newly announced prerecorded HDTV movies. See topics about this here and in HDTV Programming & Hardware.
Another alternative is to consider the 169time DTC-100 modification, it has been recently reported this works with the JVC DVHS decks. I believe you could use IEEE1394 out of the DTC into the Sony. The modification has two IEEE1394 interfaces, one for the DVHS, one for the Sony. Perhaps h2ofun Dave can provide more info about this.
To the best of my knowledge, there is no workable method of using the Sony IEEE1394 interface to record to a DVHS deck at this time. I would suspect solutions for this could be made available from Sony or others, by making a DVHS with a DTV tuner bulit in, but I would not be able to predict when.