I've read all the mixed reviews on Driveshaft Disconnect. Let me offer this:
1. It's different to already have a vehicle you like, that's otherwise what you want for a toad, than to buy a new one knowing you'll have risk with the disconnect. If I already had the Toyota, liked it, wanted to tow it, YES, I'd get a Remco Disconnect. BUT!!!
2. Get a driveshaft from a salvage yard as backup. Have a driveline shop make sure both shafts are OK and install the Remco in one of them. Then you can use the truck if the Remco requires service, or be ready to bail out of it if you find you really have to.
Just me, but I see the Lube Pump as a bigger risk than the Disconnect.