Regioselectivity control is critical for the practical utility of hydrofunctionalization methodologies, but access to both regioisomers via a regiodivergent strategy is equally significant. Thus, we investigated the potential to switch the regioselectivity of the dualcatalytic system to exclusively produce the complementary isomer (3a'), which is inaccessible by the phosphine-amine catalytic system. Given the inherent reactivity of the allene intermediate (2) with nucleophiles, we hypothesized the feasibility of a formal β-selective direct HCN addition. While such reactivity is developed for strong nucleophiles like thiols, no reports exist for direct HCN addition, likely due to the low nucleophilicity of HCN.