You're probably right that it doesn't matter. I had issues in the long ago past, but have not tried it in a decade. Virtually all devices can display an sRGB image reasonably accurately.
Interesting experiment this afternoon.
🙂 I quickly borrowed a number of machines with various browsers and pulled up this image:
http://www.demare.me/gallery/var/albums/coney1.jpg
I picked that one because I know it's totally greyscale, no color at all, and it's a recent clean scan, and on my monitor on the home machine I can see the details in the right-hand shadows easily.
Chrome and Chromium (cousins), Firefox, Seamonkey, and IceWeasel (cousins), Internet Explorer, and some no name ones on tablets and smart phones. Mostly office type PCs using Windows and one LibCad workstation (Linux). Most machines had more than one browser.
The interesting thing was that there was a LOT of difference from machine to machine and monitor to monitor and little if any from browser to browser!
Most of the systems had the shadow detail totally down in the mud!
The only color cast change I saw was on one machine when you dragged the window from one monitor to another. It had a weak amber hue on one and a weak bluish hue on the other.
Also, I never post BW images that are truly neutral. I impart a slight color tone to all of them, just as I did in the darkroom. A grayscale image cannot be toned!
Very true. I tend to think of a B&W image as being totally neutral, with untoned grains of silver on wet prints, and black ink only on inkjet and magazine/newspaper prints. I just realized that I don't think I've ever done a toned B&W print in my life! Something to try, I guess.
🙂