I've had success playing foreign blu-rays on my domestic blu-ray player, even if they are noted as being specifically region 2, where region 2 DVD's do not play on the player.
I'm very happy with it and loved that group. The whole was so much more than the sum of the parts, and it really brought out the best in the Brecker's and Galper.
Never got to see Mingus. Saw a spectacular Mingus Dynasty performance at the Painted Bride Art Center in the 90's. Walrath led it. John Hicks, Michael Formanek, Josh Redman, Alex Foster. Don't remember drummer or trombone.
Last Sunday's Philadelphia Inquirer published a good interview with Questlove about this. So strange that it has been so neglected, given all the attention WattStax garnered a couple of years later. But of course Stax got the soundtrack to that released which I guess makes all the difference.