thanks everyone for your quick responses.
jenny, i probably will have to get someone to distract my wife so i can take the pan drippings (she will otherwise be defending the roast so i don't "do" anything to it that she doesn't want), but i will probably have only a few minutes to create the gravy.
i'm thinking of dropping in to the kitchen on a wire harness, like tom cruise in "mission impossible", and making the gravy while her back is turned.
anyway, robo, that's the idea of what i was looking for, thanks. i like the idea of garlic, carrots, broth and soy sauce. if i can't obtain much drippings before the alarms go off and the hounds are released, i think this would still work.
i wonder, if i can't get the drippings, could i make a pork stock before hand from pork rib and chop bones?
also, would adding a little fruit preserves instead of carrots work ok? i'm thinking like a raspberry/soy/garlic/broth sauce.
i realize that my mission, should i accept it, is to acquire the drippings with great prejudice.
edited to add: thanks andy m.. depending on timing and other events, i may go with the pre-made roux you suggest. the last several sauces/gravies that i have made with white wine have been a big hit with dw, i think to her surprise. with a little wheeling and dealing, i might get her to give me a few minutes when the roast is done.