Well, body width tends to increase with every additional string. I believe Alembic uses the same body wings no matter the string count, but the width of the neck can increase significantly. The difference is magnified on a comfort taper neck as the string spacing at the bridge is wider.
One thing you need to consider is if it is just reach that is an issue for you, or if the width of the fretboard is also something you need to manage. If you play up the neck and have issues with too much space between strings, a stock Rogue might not be the best choice. On the other hand, if you like that space for chording or tapping access, it may be just right.
In any case, take a look at the specs for both neck tapers. I would suspect that the comfort taper bridge on a five string is at least half an inch wider than a standard taper neck.