This is one case where you can get more of a blend of both. REW removes completely all pigment while BEW leaves only a small amount in part of the eye. Due to how eye pigments work you can get a BEW with varying amounts of ruby cast to the eye when you combine any C locus gene. Sable and himi based BEW do not show well, if at all, because of the reddish blue eyes. When you get to the stronger C locus REW genes then you get a more obvious red but sometimes can still see there is BEW as well. Especially in certain lighting they might look more one or the other. Red often shows up more in different lighting and of course tends to come out more in photographs. Since BEW often lack type they have been crossed to breeds with REW resulting in quite a few culls being sold that are BEW with very red tinted eyes and produce REW or other C locus colors with vienna markings on the shaded colors.
Both opinions of dominance end up correct depending how much the REW removes the remaining eye color or not, what light you are inspecting the rabbits under, and exactly how blue the eye needs to be for an individual to claim the BEW is acting dominant. If a sable BEW is turned white in the body but has heavy ruby tint in the blue eyes most would still claim the BEW is dominant but REW already starts out with the body color removed. With the only change being the 2 eye colors interfering with each other some are going to say any blue showing up in their particular rabbits means BEW is acting dominant and others will say the amount of red they see in their rabbits means REW is dominant.