I believe yes, you should. With the proper caveats and training, your client should be able to see what’s going on.
The client has fewer surprises, is in on the problems and #FTW’s. They feel more connected to the product and weirdly will start to feel more “onside”.
Sure it might seem scary at first, but after the initial storming, the process does begin forming!
It’s all about improving process through transparency.