Hi , and thanks for your post and question - it's a good one. While I am hopeful others in the community will see your inquiry and respond by sharing their own anecdotal experiences, I have something to contribute as well.
We have, in fact, had some community members who have shared their experiences already here. You will find their comments in several of the posts online. For your convenience, here is a link to several of those articles: https://copd.net/search?s=endobronchial%20valve%20procedure.
As well, we also have a wealth of material which speaks to lung volume reduction surgery (LVRS), another of your concerns. Here are some other articles which focus on this type of treatment: https://copd.net/search?s=lung%20volume%20reduction%20surgery.
I do hope you find the information is helpful in a practical way.
Wishing you well,
Leon (site moderator COPD.net)