Yes, it is a smart idea to hold your GTVH shares until at least the SNTX Dividend shares hit your trading account. I would not rely on the previously announced Shareholder of Record Date.
Yes, like you, the SNTX is absolutely a hold for me to see how things progress.
The current SNTX key things for me are that the SNTX actually distributes the dividend shares and said shares show up in my trading account AND the SNTX eventually UPLISTS to the OTCQB within 12 months or less once the dividends are distributed.
If Javier does this SNTX OTCQB UPLIST, he is looking for a substantial SNTX company and stock price.
IMO.