Force two different shipping methods to load on checkout

[rampddc]

Client is a reseller and deals with 4 different suppliers which handle all her shipping from their own outlets. Because shipping methods range from Flat rate to Canada Post we had have installed two different modules VM2.0 VM Postcode & VM shipping. 

The problem we are having is on checkout, if a shopper selects one item that uses Canada post and a second item which uses the flat rate shipping, both shipping options are offered but only one can be selected.

Because the two different shipping methods are needed on checkout, is there anyway to force both to load?


Running on Joomla 2.5.16
Virtuemart 2.0.24c

Single page checkout

http://bdbstore.com

[GJC Web Design]

Hmm -can't even think how that could begin to work.. how can VM know what shipping would apply to what products even after getting both to be selected (I doubt this would ever be possible)

Why not a bit of sideways thinking.. if (I assume ) you can already filter which have postcode shipping and which don't (by cat?) if Flatrate is really flat what about a "Tax and Calc rule" applied to only the ones exempt from the Postcode shipping and get your shipping cost per item that way?