Under normal A&A with 3rd Edition Rules, I would strongly advise against this. The reason being is that subs can be sunk easily, especially by UK’s RAF the following turn. This also screw you out of 5 valuable inf that could be used elsewhere.
However, with House Rules A&A Sub-pens, Coastal Blockading, Detection Rules, and Wolf Packs, having an IC is Western Europe can certainly be well worth the risk. It adds a new dimension to the Atlantic War limited not only to the air.