Firstly, Tommy Haas's takeback is sound.
Secondly, the 1hbh is meant to be complementary of a great slice. The two together are more than enough wing for the modern game.
Best topspin 1hbh for length of groundy IMO is Stan's although Ritchie hits the meanest angles with his. What makes Roger's spo good IMO is exactly what I alluded to above, how seamlessly he complements it with his slice in handling his business on that wing.