JollyJim,

Just did a small battle with this myself, not fully worked out but:

I found that if there is just a product(no attributes) that the 'Buy Now' is present;

If the product has an attribute then 'more info' is present as you must select from the options.

what I have not got my arms around is the 'buy now' does not offer a qty selection in the process and just adds 1 to the cart. There you can change the qty but it is not self evident.

I don't know if this is news to you or if you already noticed this and still want the 'buy now' button.