Personally i would not touch an add on. As you say too much length, make an unbalanced shot, uncomfertable too. so i would make me an unhappy shooter.
why not get a dedicated with quick release mount, most are & will simply unscrew & go back in seconds, as for the std day scope ,quick release are available also in 25 /30 mm mounts.
remember to treat any N/V scope with care , with no artificial light passing thrpugh it, & keeping the prism perfect .
before splashing a £1k + try the NVRS-F (top n/v) with good Infa red add on, you will be amaised at the clarity..Avoid A