I typically breed my Tarentaise to small birthweight black angus bulls for a terminal F1 cross -- they generally sell well at the auction barn, although a local guy liked my two 2011 heifers so much he bought both of their black hides for his commercial herd (I agree with MO_cows that if you breed Tarentaise to homozygous polled black angus, you'll have hornless black by weaning, although their baby coat my have red streaks).
I read in an AI magazine a couple of years ago that industry wanted a continental x British bred back to black angus. I experimented this year and bred the older cow to a small birthweight polled hereford, and of course she gave me a red bull with a white splash on his face (do you call that a "meckle?"). But the intent was to have a Tarentaise/polled herf heifer for hybrid vigor, straight backs with a smaller frame, and plenty of milk. While a lot of people do use Red Angus on Tarentaise, I think the RA and BA are too genetically similar (they were the same breed not that long ago) and any hybrid vigor in the F1 would be quickly countered when bred back to Black Angus in the next generation. I would expect that the resulting continental black baldie (1/4 Tarentaise, 1/4 polled herf, 1/2 black angus) to have some residual hybrid benefits, certainly more than the traditional British black baldie.
Of course, I'm on a small acreage in Virginia and my breeding objective is for smaller, efficient cows for an annual cash return. Your mileage may vary. I would imagine that you could use any continental cow in place of a Tarentaise in that mix and get similar results.