It's good that people are finally talking about this. Like 7 years ago, people were commonly pretending that they liked it (or maybe they just didn't watch their productivity).
I scoffed at standing desks until my new workspace installed them (the motorized kind, that adjust up or down) and I tried standing for a few days. I found I liked it a lot. I almost never sit at my desk now.
Just to throw it out there, I much prefer sitting at my desk, but I make it a point to spend some time wandering around the office/outside the building for at least a few minutes every hour.
I'm also not a developer though, so I don't need to be in focus mode for long periods of time.
As I've learned after being a huge opponent of offices and then beijg forced to work in one: Terrible for individual productivity, great for group productivity.
Teams work better when everyone's in a room together. Alas.
Also, if you have problems with interruption: stop being macho and write some fucking notes while you work. Don't keep that shit in short term memory.
Like when people pretended they liked standing desks because they spent $1000 in one. Imagine standing still for eight hours a day.