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My personal experience: IES (dynamic thermal software, not CFD) has had an export for SketchUp for a few years. I would be asking for a trial version before you buy so that you can confirm whether the feature is really useful. As an example, the revit model will be for the whole building, while your CFD analysis will only be for the critical space you want to model.
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3D Revit model can be very very complex and not well suited for CFD modelling. It is not because the software has 3D revit import that it will save time or be very useful in the long run. But thought I would comment on the 3D revit import: I have neither of the two software you mentioned. HVAC CFD Software? Best option? - CFD Online Discussion Forums