Logic Pro X Recording acoustic guitar using IR in Space Designer


has anyone used an IR imported into LPX’s Space Designer to record acoustic guitar ‘directly’ and got what they consider good results? I tried it today using a Sigma D45 IR but was rather disappointed with the thinness of the sound. I use the same IR in an Atomic Amplifire to play acoustic direct to a PA and the sound is wonderful, better than I expected, but DI to LPX not so much :(