who has used these type rings? I plan on using a zeiss conquest scope, and would really like to not mark it up. they are split top to bottom (vertically), instead of the typical horizontal split. they install on weaver style bases. not sure if they have a reputation for being excellent rings, so-so, or if they had flaws any of you guys may have experienced. Please let me know! thanks. they are the permanently attached type, warne part#201m.