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3500 -RA SCT004 BKN006 OVC008
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2 - Departure in these conditions is reasonable with an IR, bit daft with just an IMC (cloud conditions are well below the recommended minima for an IMC holder).
Why are the cloud conditions well below the minima for an IMC holder?
It depends on what approach systems are available. An ILS or NDB approach with a DH/MDH of 400' or less can be legitimately attempted by an IMC holder in these conditions. For the purposes of takeoff in a single CAP507 states that a cloud base of 1000' agl is the public transport minima but also says that takeoff with less than 600' cloudbase is not recommended.