I have a Moen single curved rod. I've only had it for a month or so, so it's too early for rust. However, I purchased it based on very good reviews, both here and on Amazon. I was originally planning on getting a straight tension rod, because I needed my head examined. I had this notion that drilling holes in my new tub/shower surround tile was too heinous to consider. I even talked myself into thinking that the straight rod provided enough room while taking a shower. That may be sorta true. I'm small and don't fling my arms around a lot in the shower. I would have been fine and not emotionally scarred. I finally had a moment of reason and let them install the curved rod. Not, mind you, until I'd been very scientific about finding the exact sweet spot for its placement. It is wonderful. Seriously. The shower feels quite spacious in width with the curtain closed. I also like that outside the shower it doesn't look at all strange or bulge-y. Almost like an optical illusion. Don't worry about the point where the two sections of rod meet. There's a little plastic thing that slides over it and if you use rings with ball bearings, they slide over it without a hitch.

https://www.draperyrodsdirect.com/?msclkid=f3e9ee4d5dc414907eacb01070e0267c&utm_source=bing&utm_medium=cpc&utm_campaign=Traverse%20Rods&utm_term=double%20traverse%20rod&utm_content=Double%20Traverse%20Rods

Why not do the sheers with grommets then opening and closing is very easy. Actually IMO solar shades woulf solve the whole issue use them all day to control heat and light and let you keep the view and give you daytime privacy the the heavy drapes can go on the traverse rod and done .

That would look amazing I thought of that but husband didn’t like the idea of one side of the wall with solar shades (he doesn’t want solar shades for the patio door :)