From a new-ish TREG participant (I'm aiming to get a "first impressions" post up within the next few days)...
During my first few days with the TextBlade I had lots of problems with the Bluetooth connection to my iMac. At WayTools' suggestion I moved the Bluetooth dongle from another machine (MacBook Air running W10 in Boot Camp) to the iMac. The connection to the iMac through the dongle has been rock solid since then with no issues arising during jumps, when waking the TextBlade, or while typing.
As a bit of additional background, the Bluetooth dongle was provided by WayTools as part of the TREG package. Aesthetically the dongle is a bit hideous- it's a fairly large (for a dongle) grey plastic thing with a blue light that flashes constantly- thankfully it's plugged in where I can't see it! Functionally, however, the device has been great. It comes pre-paired with the TextBlade on jump slot 6 and essentially allows the TextBlade to function as a standard plug-and-play USB keyboard. I think a WayTools Bluetooth dongle is something that many TextBlade owners will find useful. I have no idea what WayTools' plans are at this point with respect to selling them as an accessory. Assuming they do sell them, I sincerely hope the form factor is greatly reduced (similar to something like the Logitech Unifying Receiver, perhaps) and there is no blinking blue light. If you're looking for additional info on dongles and the TextBlade, there's a useful page here on the waytools.rocks website (BTW, the dongle I received is different from the Laird one pictured on that page).
And one final tidbit related to the Mac Bluetooth connection issue... if I understood this part of my conversation with Mark correctly (yes, the standard 3+ hour intro call!), it sounds like the troubleshooting that WayTools is currently doing as a result of the Bluetooth issue is leading to some firmware improvements that will benefit all users of the TextBlade. The technical details are a bit beyond me but the bottom line is that jumps are being made more reliable, especially for people who may be changing their jump slots multiple times. I don't think there have been any major issues with jumps to date, but refining the code is always a good thing and likely helps to reduce the inevitable issues that pop up when something like the TextBlade gets released at large scale to the general public.