The rule of thumb with any phono stage is not how much noise there is when you lift the tone arm off the LP, but how much noise there is when the needle is in a good silent groove.
In the latter case the noise should be less than that of the groove. If not you have a problem and you can disregard what is happening when the needle is lifted off the LP (although it is nice if its quiet there, but with LOMC that is always a bit of a trick). An SUT could help, but you may well pay a price of reduced detail and impact (loading on LOMC cartridges is not critical but it is really critical on SUTs- you want to get it right).
In the latter case the noise should be less than that of the groove. If not you have a problem and you can disregard what is happening when the needle is lifted off the LP (although it is nice if its quiet there, but with LOMC that is always a bit of a trick). An SUT could help, but you may well pay a price of reduced detail and impact (loading on LOMC cartridges is not critical but it is really critical on SUTs- you want to get it right).