Do you transcutaneously pace or cardiovert patients with DNR status who have not lost pulses?   

Yes, since it would not qualify as cardiopulmonary resuscitation if they maintain a pulse.

This question cannot be rationally answered without knowing the patient and knowing why they chose to be DNR. If it was because they have progressive dementia, significant comorbidities, and frailty, and wish to die peacefully with family and loved ones at their side rather than in a medical facilit...

DNR does not mean do not treat. Based on clinical situations and expected longevity, I rescinded DNR temporarily with consent to give definitive treatments like a permanent pacer or to place a stent during STEMI.

Interesting situation. Agree there is no single correct answer and that not all decisions are covered by guidelines. Need shared decision-making with the patient or POA.