Subscriptions as non-renew - like donations

[MSUKForum]

I want to create a "$1 donation" subscription, which is set as a non-renew, would this act similar to the donation feature? Or will there be some implications using the subscription system this way?

The reason I want to use this is so it keeps the donations stuff with the other subscriptions (which are annual) that I have, to try and upsell users.