I've had similar problem (with additional restriction of working on Linux). I never found good reader, but i've found some workarounds.
It probably won't be much help, but i will list them for future reference:
1) It's possible to automatically join whole chapters into one really long png (using tool like imagemagick), and then read it using standard reader like mcomix (and it's pretty comfortable - i'm still using that method). Drawback is wasting disc space. Old, badly written readers will also have problems with loading huge pages. Additionally, when testing this method for mangadex, i've noticed, that when chapters are really long, and file quality high, joining process gets CPU expensive.
2) Second option may sound like heresy, but it's about converting all pages of chapter to pdf. If done properly, loss of quality will not be so bad. Then, You can open file with any pdf reader (preferably type that can be configured for minimal/none break between pages). This solution is inferior to 1), but it's gentle for CPU, and there are no reader problem.
Both options can be handled automatically. It's possible to integrate them with downloading software, and generate so called "Long Strip files" on the fly.
Those are only workarounds - if someone knows good reader with Long Strip mode, i will be eternally grateful for his konwledge.