Numerous people have made that very deal with my jw including myself. When he first joined up and for a few years after he sometimes said he would but only if the person went to the kh first. Fortunately all of them had been forewarned about jw's lying doctrine and would only agree to go if he went to church first. You can guess how that worked out, no church and no kh for either parties.
Then he gets arrogant and huffy and says Christians are not allowed to go to a kh but we all tell him we have no desire to go and no church would df someone for going. He does not understand that a person of real faith would not be affected by walking into a kh, mosque, temple or any other religious building or meeting. We just don't want to get his personal cult persona hopes up by our going even once to a kh. Nor do we want or need to experience love bombing first hand.