I carry an EBLT and a GB every day. For field use I think you will be better served with the HT or MFS as secondary blades. I carry a DB upside down on LBE with no problem. I do stretch the lanyard cord around the tip of the kydex to ensure security. I have never lost one in this position but I do not intend to test that. The MFS is a good starter, easy to restore edge and you can get a good idea what a strider can take in abuse without being horrified at the thought of abusing your primary investment. Once you get the idea you just go ahead and use your primary for whatever task is at hand, they are built to take it.
PS the GB is a new blade, I will not mention what I was carrying.