organic chemistry - Hydrolysis of Sucrose over Sn1Ac or Sn2Ac

In "March's Advanced Organic Chemistry" I have read about the general mechanism of the acetal hydrolysis. It names the acid-catalyzed S_N1 or S_N2 as a possible mechanism for a Acetal-hydrolysis.

Now I am interested to know if S_N1 or S_N2 is mainly going on at the Hydrolysis of Sucrose to Glucose and Fructose. So I compared the different parameters which influence S_N1/S_N2.

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  Polarity of the solvent: Water -> really polar -> S_N1 preferred.

  
  


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  Stabilization of a possible Carbokation-Intermediat: Primary (Anomeric C!), so not really stabilized by Hyperconjunction -> S_N2 preferred. (Is there Hyperconjunction also in the ether-O?)

  
  


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  Mesomeric stabilization There is also a mesomeric stabilization between the resulting carbocation and a Oxonium-Ion in the S_N1-Mechanism.

  
  


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  Steric Hindrance: In my opinion, through the planar region around the anomeric C (planar ether), there is no steric hindrance -> S_N2 possible.

  
  


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  Temperature: high temperature -> S_N1 preferred.

  
  

So to conclude: Many different aspects. Because of the main points "steric hindrance" and the destabilized primary carbocation intermediate I would conclude that the hydrolysis of Sucrose goes mainly (maybe a little bit over S_N1) over S_N2.

Have I forgotten something important? Are my assumptions "No steric hindrance" and primary carbocation-intermediate correct?

I have attached my possible S_N1-mechanism.