Does the MSR Miniworks EX thread onto the wide-mouth Klean Kanteen 40oz the same way it does to the 38oz nalgene standard?

Klean Kanteen's website says their wide-mouth bottle:

• "Works with standard backcountry water filters. The widemouth section of the kk website actually features a photo of the widemouth attached to a miniworks:

I don't know how well the msr miniworks threads on, but klean kanteen certainly is making the case that the two are compatible.