Googling "27.2 dropper post" results in many available products. If the reason for purchase is to quickly change the seat height for different riders, then the posts with the dropper lever located directly under the seat would be a very clean solution.

Running all the extra cabling and cluttering up the cockpit for a remote dropper lever is really not needed unless you plan on making adjustments when road conditions don't allow safe removal of one hand off the handlebars to grab the lever under the seat.

Which would normally be the "xtreme gnar off-road" situations stated above which isn't a planned activity anyway.