As it turns out 😄 if you check the contents of the two ' CD_ICONS' folders within the two tools' zipped archives there is no 'overlap' of their files... so both tools should install and work 'as expected'...
BUT now for the bad news... 😮
Unfortunately you have chosen two 'packaged' sets that both have warnings attached to them... these are about files found within their archives that should never [ever] be installed into the Plugins folder [e.g. sketchup.rb! which comes in Tools supplied with Sketchup and can cause issues if an old copy loads form Plugins first - there are other similar files 😒 ]...
IF you still want to try these two tools then p_l_e_a_s_e make sure that you carefully read the notes/comments about these 'rogue-scripts' that are wrongly packaged with these [somewhat outdated] toolsets and do NOT install those...
😲