I've seen a few of hoytcannon's with double offset rings and thought they were okay. With a 375 I would be more worried about proper position so I didn't get beat! You could try one of the rail options that let you use weaver rings but I think they look cluttered as well. Not really a smooth classic single shot look.
I had a Leupold 1.5-5x20mm on my 9.3x74R (shown below) which should also be a good choice for your .375 H&H magnum. I'm surprised by the optical quality and generous eye relief of the Bushnell 1.75-5x32 scope. Seems to be an excellent scope for less than 1/2 the cost of the Leupold 1.5-5x20mm.
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a nikon african with german 4 reticle can be another good choice ...




























