I don't think that's quite what the OP was asking. It doesn't sound like he wants to open Chrome when he clicks on Safari, but instead wants the phone to default to Chrome for links instead of Safari.
But since you mentioned it, OpenOther is working for me (iPhone 5, 8.1). I think it's in Cydia now, but I got it from
here and installed through iFile. Just make sure you get the 0.0.1-10 version. The 0.0.1-7 version (which worked on iOS 7) sent me into safe mode when I tried to open any app.
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I think you are right, I still can not get Openother to work on my 6plus