fwiw back when they were big, light bleed was just an accepted part of the design of most underglow TKLs. In normal light it shouldn't be a problem but if you sit a dark office all day you may notice it. i've been staring at my mira for the past couple years and it's what i would describe as "relatively subtle" most of the time. being gasket mount may help a bit since more of the light is blocked by the plate.
regardless, nice design, may pick one of these up.