Speaking as a builder and repair tech, I don't use lemon oil on my instruments. It can cause issues with repair or refinish work down the road. Surfaces with oil buildup on them won't take new finish as well as clean surfaces - a finished surface that has been wiped down with lemon oil can turn a 5 minute touchup job into a much longer and more risky project. And, bare wood (like an unfinished fretboard or bridge) that has been treated with non-drying oil over time can get so oil soaked that fretwork or repairs involving glue become difficult. Plus, it tends to leave a fine film of oil on surfaces (which is why they look shiny and new) that causes the finish to slowly become even more prone to dust or fingerprints. Yes, it will dissolve crud, and yes it makes the instrument look nice, but there are a lot of downsides that can be ticking time bombs.
Hence, I don't use it. I like to take a "first, do no harm" approach to cleaning. Microfiber cloths, small amounts of hot water, and white scotchbrite pads are all essentially harmless, and they can be plenty effective.