Which LM do you have?
If the full size swisstool is going to be too heavy then you wont EDC it and it will get left in the car or at home . I dont notice my Swisstool RS on my belt at all but then again I've had a swisstool there for years .I do own a spirit also but it doesnt get half the use its bigger brother gets . The best advice is put yourself in a scenario ( the kind of thing that could happen in your day ) and ask your self would I like the spirit or the swisstool to help me out of it . If you do a search on here there is loads of photos of the Spirit and ST alongside each other . If you cant find them I can easily post a couple on here for you .Last of all dont forget there is three versions of the Swisstool and two versions of the Spirit . If you dont know the difference between them then we can help with that too ;DDunc