You really want the chain to be straight which can't be done with two sprockets to swap back & forth between. That said, it may not be a huge deal on a low power bike, but it' not ideal for it to be at an angle. Also, an o-ring chain has more drag so you'll lose some speed/efficiency over a non-oring chain. If you want low drag and low maintenance get an automatic luber. I don't mind chain lubing at all; disable the side stand switch (if it has one) or put it on a stand, run the engine in gear and spray.
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