Marketpress Product teasers and excerpts

Should teasers (text in the product's body before the <!--more--> tag) be being displayed for products when displayed in a non single post view (e.g. a product category list). I just get the automatic excerpt of the first 55 words in the main body. My understanding is that for non single post views, WordPress will use a manually entered excerpt if one has been provided, failing this the teaser text if available and as a last resort the automatic 55 word excerpt.

Also, can the "More Info..." link be removed from such excerpts in any way (other than modifying the product_excerpt function in marketpress.php which is bad)?