OK, so I will be trying a straight razor soon for the first time. I've used a shavette before. I've watched lots of videos, and they pretty much agree that one should strop prior to shaving. But the how-to videos always show people stropping not only on the leather but also on the linen/canvas with the chromium oxide or paste on it. So is that done every time pre-shave? Or do you just strop on the leather each time, and then strop also on the goobered up cloth strop when the blade starts to tug, or?